Drive or Fly: Kettle Falls, WA to Renton, WA?

Side-by-side comparison of driving versus flying for this route. Costs, time, and trade-offs at a glance.

Driving wins

Medium

No scheduled commercial flights found for GEG–BFI. At 358 miles, driving is the only practical option.

Passengers:

Vehicle:

Drive

Door to Door

6h 59m

Distance

358.3 mi

Total Cost

$115

CO2

145 kg

Cost Breakdown

Diesel$80

Hotel (1 room, 0 nights) $0

Meals (1 pax, 1 day) $35

+ No luggage restrictions or TSA lines

+ Comfortable one-day drive

+ Stop anywhere along the route

+ Have your own car at the destination

+ Likely faster door-to-door than flying

− Wear and tear on vehicle

− Fuel price fluctuations

Plan the drive

Fly

Door to Door

4h 24m

25m in the air

Air Distance

207 mi

Total Cost

$183

CO2

53 kg

Door-to-Door Timeline

Kettle Falls, WA → GEG 109m

Check-in & Security 90m

Flight 25m

Arrival & Baggage 30m

BFI → Renton, WA 10m

Cost Breakdown

Ticket (1 pax @ $128) $128

Rental car (1 day)$55

Airports

Kettle Falls, WA GEG — Spokane International Airport 73 mi, ~109m drive

Renton, WA BFI — King County International Airport - Boeing Field 5 mi, ~10m drive

No scheduled flights found

No commercial flights between GEG and BFI. Flight estimates above are theoretical.

+ Saves about 2h 35m compared to driving

+ Less physical fatigue

+ Predictable arrival time

− Airport security and check-in overhead

− No scheduled commercial flights found for this route

− May need a rental car at destination

− Luggage fees and restrictions

− Less flexibility for stops along the way

Bus

FlixBus

Door to Door

8h 8m

5h 45m on road

Total Cost

$25

CO2

13 kg

Route

FlixBus 2120

Door-to-Door Timeline

Kettle Falls, WA → Spokane Station (SPO6) 108m

Boarding 15m

Bus ride 345m

Arrival 10m

Seattle Tacoma Intl Airport (SAP6) → Renton, WA 10m

Cost Breakdown

Ticket (1 pax @ $25) $25

Estimated based on distance. Check flixbus.com for current prices.

Stations

From SPO6 — Spokane Station 72 mi, ~108m drive

To SAP6 — Seattle Tacoma Intl Airport 5 mi, ~10m drive

Service

Direct

Frequency

~7/week

+ Usually the cheapest option

+ Wi-Fi and power outlets on board

+ No driving fatigue — relax or work en route

+ Much lower carbon footprint than driving or flying

− Limited schedule — about 7 trips per week

− Travel time longer than driving

− Need transportation to/from station

− Less flexibility than driving

At a Glance

	Drive	Fly	Bus
Door-to-door time	6h 59m	4h 24m	8h 8m
Total cost (1 person)	$115	$183	$25
Carbon footprint	145 kg CO₂	53 kg CO₂	13 kg CO₂
Flexibility	High	Low
Luggage	Unlimited	Restricted
Reliability	Weather dependent	Data unavailable

Drive data: OSRM routing, EIA fuel prices

Flight data: Statistical estimate

Airports: OurAirports

Transit: FlixBus GTFS — fares estimated

Confidence: Medium — airports identified, fares estimated

Costs are estimates. Actual flight prices vary by airline, date, and booking time. Drive costs based on OSRM routing, EIA fuel prices. Computed Apr 13, 2026.

Decided to drive? See the full trip plan from Kettle Falls, WA to Renton, WA with stops, fuel costs, and turn-by-turn directions.